Home / 145,397.27-218,130.76-70,429.80

Finding the Fourth Proportional to 145,397.27, 218,130.76 and 70,429.80

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Solution

The fourth proportional to 145,397.27, 218,130.76 and 70,429.80 is: 105,661.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,397.27 : 218,130.76 = 70,429.80 : x
  2. Step 2: Convert to fraction form
    145,397.27/218,130.76 = 70,429.80/x
  3. Step 3: Cross multiply
    145,397.27x = 218,130.76 × 70,429.80
  4. Step 4: Simplify right side
    145,397.27x = 15,362,904,533.92
  5. Step 5: Solve for x
    x = 15,362,904,533.92/145,397.27
  6. Step 6: Final answer
    x = 105,661.57

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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.