Home / 145,761,640.32-218,642,875.56-42,139,281.24

Finding the Fourth Proportional to 145,761,640.32, 218,642,875.56 and 42,139,281.24

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Solution

The fourth proportional to 145,761,640.32, 218,642,875.56 and 42,139,281.24 is: 63,209,041.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,761,640.32 : 218,642,875.56 = 42,139,281.24 : x
  2. Step 2: Convert to fraction form
    145,761,640.32/218,642,875.56 = 42,139,281.24/x
  3. Step 3: Cross multiply
    145,761,640.32x = 218,642,875.56 × 42,139,281.24
  4. Step 4: Simplify right side
    145,761,640.32x = 9,213,453,624,345,164
  5. Step 5: Solve for x
    x = 9,213,453,624,345,164/145,761,640.32
  6. Step 6: Final answer
    x = 63,209,041.86

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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.