Home / 145,681.40-218,281.53-66,621.35

Finding the Fourth Proportional to 145,681.40, 218,281.53 and 66,621.35

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Solution

The fourth proportional to 145,681.40, 218,281.53 and 66,621.35 is: 99,822.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,681.40 : 218,281.53 = 66,621.35 : x
  2. Step 2: Convert to fraction form
    145,681.40/218,281.53 = 66,621.35/x
  3. Step 3: Cross multiply
    145,681.40x = 218,281.53 × 66,621.35
  4. Step 4: Simplify right side
    145,681.40x = 14,542,211,004.20
  5. Step 5: Solve for x
    x = 14,542,211,004.20/145,681.40
  6. Step 6: Final answer
    x = 99,822.01

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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.