Home / 145,909.04-201,430.59-103,568.72

Finding the Fourth Proportional to 145,909.04, 201,430.59 and 103,568.72

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Solution

The fourth proportional to 145,909.04, 201,430.59 and 103,568.72 is: 142,978.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,909.04 : 201,430.59 = 103,568.72 : x
  2. Step 2: Convert to fraction form
    145,909.04/201,430.59 = 103,568.72/x
  3. Step 3: Cross multiply
    145,909.04x = 201,430.59 × 103,568.72
  4. Step 4: Simplify right side
    145,909.04x = 20,861,908,490.34
  5. Step 5: Solve for x
    x = 20,861,908,490.34/145,909.04
  6. Step 6: Final answer
    x = 142,978.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.