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Finding the Fourth Proportional to 130,341.81, 179,866.71 and 72,975.77

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Solution

The fourth proportional to 130,341.81, 179,866.71 and 72,975.77 is: 100,703.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,341.81 : 179,866.71 = 72,975.77 : x
  2. Step 2: Convert to fraction form
    130,341.81/179,866.71 = 72,975.77/x
  3. Step 3: Cross multiply
    130,341.81x = 179,866.71 × 72,975.77
  4. Step 4: Simplify right side
    130,341.81x = 13,125,911,434.78
  5. Step 5: Solve for x
    x = 13,125,911,434.78/130,341.81
  6. Step 6: Final answer
    x = 100,703.77

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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.