Home / 145,381,640.40-218,072,460.60-139,642,077.60

Finding the Fourth Proportional to 145,381,640.40, 218,072,460.60 and 139,642,077.60

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Solution

The fourth proportional to 145,381,640.40, 218,072,460.60 and 139,642,077.60 is: 209,463,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,381,640.40 : 218,072,460.60 = 139,642,077.60 : x
  2. Step 2: Convert to fraction form
    145,381,640.40/218,072,460.60 = 139,642,077.60/x
  3. Step 3: Cross multiply
    145,381,640.40x = 218,072,460.60 × 139,642,077.60
  4. Step 4: Simplify right side
    145,381,640.40x = 30,452,091,465,528,140
  5. Step 5: Solve for x
    x = 30,452,091,465,528,140/145,381,640.40
  6. Step 6: Final answer
    x = 209,463,116.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.